Same thing happened to me. Installed in C:\darkmod and tears of st. Lucia ran fine but I had to disable eax to run the training mission. A shame as I love eax. The xfi titaniums are pretty glitchy with the drivers though (mine often uninstall for no reason, not recently though... fingers crossed it doesn't decide to happen next time I boot up, lol) I have a Xfi titanium HD, q9550, p5q deluxe, 8gb ram, gtx 275 with 197.45 drivers, win 7 64.. Nothing brand spanking new.